方向遍历顺序说明下一个倒序(从右往左)先处理右侧,栈里存「右侧候选」上一个正序(从左往右)先处理左侧,栈里存「左侧候选」
The British Medical Association (BMA) said 83% of its members had voted to continue with the walkout after ministers said they would not increase doctors' pay.
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Philippa RoxbyHealth reporter。关于这个话题,safew官方版本下载提供了深入分析